Personalize virtually any surface and create vividly painted rocks with brilliant opaque-acrylic Elmer's Painters Paint Markers. Activating with a simple shake, just push down on the medium-nib for effortless marks that are permanent on most surfaces including wood, ceramic, glass, fabric and more. Permanent, quick-drying and streak-free, these paint markers are great for painting rocks, crafting, window art and more. Each paint pen uses acid-free, non-toxic paint that's ideal for almost every project.